3D CFD Analysis for Improving Environment in Paper Mill

• Main Authors: Ting-Shuo Hsu, 許庭碩
• Other Authors: Kuei-Peng Lee
• Format: Others
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/c8p7bh

碩士 === 國立臺北科技大學 === 能源與冷凍空調工程系碩士班 === 103 === The purpose of this study is to conduct computational fluid dynamic (CFD) simulations for the paper mills. To prevent the accumulation of water vapor causing condensation on the interior surfaces of the building’s rooftop, this research explored a solution using heating ventilation system to control the environment relative humidity. Taguchi Methods was used to design experiments. This study tried two times to use orthogonal experiment to decide the best supply air condition. According to first orthogonal experiment result, the smaller elevation of supply air, the lower relative humidity on the rooftop, when the elevation was bigger than 30°. The result of second simulation ,showed that the relative humidity was not affected significantly by the supply air angles when the angles were between -30° and 30°. In order to save the energy, the possibility of using a cooler supply air to resolve the condensing problem was also studied. The result showed that using the 43℃ supply air instead of 45℃ supply air could result in the similar prevention of condensation.